Benjamin maillefeet



(No Model.)

' B. MAILLEFERT.

Prooegs ofand Apparatus for Refrigerating and Making Ice.

No. 23I,824. vpat nted Aug. 31, I880.

WITNESSES: y

ATTORNEYS.

:1. PEIERSk PHDTO-LITHOGRAFKER WASHINGTON, a c.

UNITED STATES PATENT OFFICE.

BENJAMIN MAILLEFERT, OF ASTORIA, ASS IGNOR OF ONE-HALF OF HIS RIGHT TO HENRY EHLERS, OF NEW YORK, N. Y.

PROCESS OF AND APPARATUS FOR REFRIGERATING AND MAKING ICE.

SPECIFICATION formingpart of Letters Patent No. 231,824, dated August 31, 1880.

Application filed March 11, 1880. (No model.)

To all whom it may concern:

Be it known that I, BENJAMIN MAILLEFERT, of Astoria, Queens county, and State of New York; have invented a new and useful Improvement in Apparatus for and Process of Making Ice, of which the following is aspecitication.

My improvements relate to apparatus for manufacturing ice and snow or producing cold air for refrigerating purposes by the use of compressed air in connection with a steam-jet.

In my apparatus the compressed air from a pump passes through a cooler which is supplied witha constant stream of cold water, from whence the air passes to a chamber, in which it expands in presence of steam supplied in a jet, whereby the air and particles of moisture are brought into intimate contact, all of which will be explained more particularly with reference to the accompanying drawings, wherein?- Figure l is a vertical longitudinal section of my ice-machine. showing the air-pumps, cooler, and expansion-chamber. Fig. 2 is a Vertical transverse section, showing the arrangement of the machine in connection with a refrigeratin g-chamber.

Similar letters of reference indicate corresponding parts.

A A are the air-pumps, which may be ot'any usual or desired construction. B is the cooler, and G the expansion or freezing chamber. The cooler B is preferably constructed as a cylinder with closed ends, and with partitions a near to each to form air-spaces, that connect by tubes 1) fitted in the partitions a. A pipe, 0, connects the air-pumps with the cylinder B at one end, and a pipe, d, provided with a cock, connects the cooler B with the chamber 0. The space in cooler B between the partitions a and around the tubes 2) is supplied with water by a pipe, 0, which enters through the top, and is to be connected with a tank or hydrant. j: is an overflow-pipe for the water, and g is a pipe from the chamber 0 to the water-space of cooler B. This pipe 9 rises a-short distance from the bottom of chamber (J, and serves to carry off melted snow to the cooler, thereby freeing the chamber of excessand aiding the cooling operation in the cooler.

h is the injector for supplying steam, which pipe enters chamber 0 through pipe tl, so as to supply a jet of steam which meets the air at the moment of expansion, thereby insuring a perfect mixture. The injector h is connected to a pipe which will pass to a suitable generator of steam.

In operation, the compressed air passes to the cooler B, where the heat due to compres sion is removed and the temperature reduced to, say, .From the cooler the air passes, by pipe cl, to chamber 0, Where it expands and is met by the jet of steam. The air and the particles of water come intimately into contact and snow or pellets of ice are produced, which frozen particles accumulate in the chamber G, and may be used as required.

It cold air for refrigerating purposes is required, the chamber 0 will be connected, as shown, bya pipe, 2', with a refrigerating-chamber, D, that is arranged in any usual manner for containing provisions, 850., and allowing a circulation of the air. The supply of steam to chamber 0 will in this case be cut otf.

When used simply for refrigeration the air will be supplied to chamber 0 by the large pipe cl. This pipe is fitted with a cock and connected by a smaller pipe below the cook to the steam-pipe of the injector, as shown in dotted lines, so that when snow or ice is to be made the large pipe 01 can be closed and the air supplied to the injector by the smaller pipe.

What I claim as new is- 1. In ice-machines depending for their action on the expansion of compressed air within a freezing-chamber, the combination, with the freezing-chamber and air-supply pipe, of an injector, h, for supplying steam, substantially as shown and described.

2. The within-described process for the manufacture of snow and icefwhich consists in commingling steam and compressed air by injection together into a closed expansion and freezing chamber, substantially as specified.

BENJAMIN MAILLEFERT.

Witnesses:

ETHAN A. ALLEN, J osEPH R. HARRIS. 

